Analysis
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max time kernel
94s -
max time network
113s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
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submitted
18/04/2024, 12:11
General
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Target
maintenanceservice_installer.exe
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Size
260KB
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MD5
ed610c05f6818d5b0b0fa8ed772f45eb
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SHA1
e323b9ffbce9645ed6eb13d2871e02f866187466
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SHA256
4a77020e17f731d4023e6ad65d4847471b4f26778dd24409fef90fb03d695045
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SHA512
ef7d90ad0dceb48b171f368b0ec2adb9fc9023c4be144ad329c2dc1715a7d9e219975d39ce244702d642976dc34f3f513b6ee6daade8fd9634dc54e3486912ec
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SSDEEP
6144:bTVDNGeUjD514d9oU5DOY7y4j9UBV+UdvrEFp7hK7OW:bTfTUjD51i9oU5DO69UBjvrEH7S
Malware Config
Signatures
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Modifies AppInit DLL entries 2 TTPs
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ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
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Loads dropped DLL 2 IoCs
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UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 2 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\maintenanceservice_installer.exe"C:\Users\Admin\AppData\Local\Temp\maintenanceservice_installer.exe"1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
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Filesize
22KB
MD5b361682fa5e6a1906e754cfa08aa8d90
SHA1c6701aee0c866565de1b7c1f81fd88da56b395d3
SHA256b711c4f17690421c9dc8ddb9ed5a9ddc539b3a28f11e19c851e25dcfc7701c04
SHA5122778f91c9bcf83277d26c71118a1ccb0fb3ce50e89729f14f4915bc65dd48503a77b1e5118ce774dea72f5ce3cc8681eb9ca3c55cf90e9f61a177101ba192ae9
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Filesize
192KB
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Filesize
328KB
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Filesize
192KB
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Filesize
328KB